[Q] GT-i9300 No network - Galaxy S III Q&A, Help & Troubleshooting

Hi all,
I am new to this forum. I have a Galaxy SIII GT-i9300 with Cyanogenmod 10.2. Last weekend I went out of range from the network in to the country side. When I came back to the city my phone would not connect back to the network. I tried to manually register it to the network Vodafone NZ but it just says "Cant connect to this network try again later. Ive tried to take out battery and sim card and sd card but no luck. I also restored my phone back to my last back up but still no luck. Just wanted to try something before I reset it. Wifi works fine.
Baseband version I9300XXELLA
Signal strength -81dBm 17asu
mobile network type HSDPA
Service state out of service
IMEI SV 01
Could it be the modem? Everything was working fine before I went out of range.
I know the IMEI number plays up but mine is ok.
Please help.

Don't post your imei number, it's like putting your bank details on the internet.
Try different sim and your sim in another phone, then wipe and flash full stock rom with odin to test for hardware fault.
Sent from my GT-I9300 using Tapatalk

boomboomer said:
Don't post your imei number, it's like putting your bank details on the internet.
Try different sim and your sim in another phone, then wipe and flash full stock rom with odin to test for hardware fault.
Sent from my GT-I9300 using Tapatalk
Click to expand...
Click to collapse
Thanks for that I removed my IMEI number.
I tested my sim in another phone it worked but the other sim didnt work in my phone.
Ive formatted my phone and flashed a stock rom the network bars did come up when I was doing the initial setup but afterwards it went off.
I am able to search for the networks but not register on to it.
Ive read alot of forums and they are all talking about wrong IMEI and serial number but mine match up to the back of the phone.

Your sim reader is faulty.
Sent from my GT-I9300 using Tapatalk

It is detecting that there is a sim as when I take it out it says no sim and when I put it back in the notification goes away.
But that might be on the right lines as when theres no sim the signal bars seems to fluctuate and when I put it back in it goes away.
Ive flashed another stock rom but its a Great Britain version but it matched up to my baseband and it did a few updates and now my baseband has changed. Now when I press "select automatically" it says registered to network but nothing happens and doesn't register to Vodafone nz. So I dont think theres anything wrong with the modem.
How would I go about checking the sim reader?
Thanks for all thr help much appreciated

You already have, 'other sim didn't work in my phone'. Take it to a service centre.
Sent from my GT-I9300 using Tapatalk

ihave the same probleme with i9300 ,i flashed the phone ,patched with ariza ,did network repair with z3x box and NOTHING
still no network .
PS: imei is good
can some 1 help with a solution ?!
thanks

Related

[Q] No service error

Hi guys
This is related to my brother's Galaxy S II. He had been using it for a couple of weeks when suddenly (according to him, wouldn't say if he dropped it or anything), he got disconnected from the mobile network.
He rebooted the phone, and got a no service error. When going into Mobile Network settings, it reads 'Insert SIM to access mobile network settings', even with the SIM inserted.
I tried his SIM in his phone - no luck.
I tried my SIM in his phone - no luck.
I tried his SIM in my phone - works.
Tried flashing two new ROMs - no luck.
I suppose this is the phone's SIM reader, then, but have you had any similar problems with it? Do you reckon this will be covered by warranty?
Thanks in advance.
You tried his sim on your phone and no luck? I thought you said his phone is the one wiyh no signal? Anyway, can you still see the imei on his phone?
Sent from my GT-I9100 using xda premium
Yes, I tried his sim on my phone too, just to see if the SIM was broken (which it wasn't). His phone has no signal, that is correct.
IMEI and IMEI SV list 'unknown' in phone info, but on the original boxing it's listed as 358150044627942.
Baseband also Unknown?
Maybe he flashed some custom Roms and lost his imei.
Sent from my GT-I9100 using XDA App
Yes sir, Baseband is also unknown. He wouldn't know how to flash custom ROMs, so I doubt that's the case.
Is this something we can fix ourselves, or would it need shipping off to service?
Thanks.
If you are sure that he doesnt flash any custom rom and only update with KIES you should bring the phone to Sammy support.
You can search the forum and find some threads were people lost their IMEI 'cause they flash custom roms. Then you can recover it when you backuped your EFS.
http://forum.xda-developers.com/showthread.php?t=1261948
But in this case you i think you havent any EFS backup.
My mistake: I had flashed LightningMod to his phone, but he had no problems using it after I flashed it -- the error only appeared after a couple of weeks.
OK, so seems like we're just gonna send it to Samsung, as I'm leaving the country on Tuesday anyway. Have reverted to stock rom and kernel, and I guess we'll blame it on KIES or something. Judging on our past experiences with Samsung it shouldn't be a problem anyway.
Please use the Q&A Forum for questions Thanks
Moving to Q&A
Don't forget to reset the flash counter using a jig..
Sent from my GT-I9100 using xda premium

[Q] not registered on network. Galaxy 2

Hi.
I have a big problem with my G2, and have tried many things.
It all started 2 weeks ago. I lost connection to my network.
I tried many things, and ended up giving it to a repair shop, in China, as I was there shortly. They put a new firmware into the phone, and a chinese SIM card worked.
I found an english version of the firmware, and asked them to update with that version, No problem. Everything worked well...but when I arrived back to Denmark, same problem. Not registered on the network.
Now I have tried many things, as Kies could not recognize the firmware version. I burned a 2.35 version into the phone with Odin, and Kies regocnized the version, and now updated to 4.03. Great, but ... I have the same problem. APN settings acc to my network provider. Oister 3 in Denmark.
I really have no idea what to do anymore. And I cant send it in for repair, as the flash counter says 10 times.
Is ther someone here, with a very deep knowledge in Logs etc, as I can send Logs if I am explained what to do.
The short time the phone worked, did I really love it.
And also the chinese SIM can not connect from Denmark.
I would prefer all Logs etc in private email, but if we solve it, I will poste solutions and results here.
Best of regrads
Morten
As for the counter, install and run triangleaway - it can be found in the SGSII section of XDA.
Check that the sim card works (try it on another phone) and borrow another sim card (on the same network). It is amazing how many problems like this are due to a damaged sim card or just not connecting correctly. I had a friend who took the sim card out to flash their Samsung Galaxy 3 and put in the sim card wrongly and couldn't make a call.
Can you copy your contacts to or create one in the sim card?
I doubt that it is a problem with the EFS folder, ie no IMEI number because it was fixed with a china sim, but it may be. Is the IMEI number you get from dialing *#06# 004999010640000 or different from the label under the battery? If so then you have a EFS folder problem. There is an app that may fix it - it requires root - * HERE *
Mobile network
Hi
Thanks for the reply.
A:
I can make, copy, edit etc contact directly at the simcard in the phone, and also copy, edit etc from Kies to the Sim card. And yes. It is the simcard I can do those things at. Double checked that it was somcard and not the phone memory
B:
Double checked the IMEI number again.
Label phone same as *#06#
Further information:
In the first day, I tried many many things to get the phone working.
I searched the internet a lot, and I found some kind of help. Like with IMEI check, I should type a code like *#xxxx# or *xxxx* Stupid as I was, I did not write down the code, and also did not safe the page on the internet, so I have no idea what code I wrote. I am sure it was something regarding Mobile network or CSC.
Reg Triangle away.
My phone is no longer rooted, as I try to have it in original mode, so its ready to send to repair, if needed. Triangleaway needs the phone to be routed, right ?
And will that not require an unsafe kernel ?
After resetting, then I suppose I need to install an original kernel again, and will that not make the counter go to 1 ?
Any other ideas ?
Regards
Morten
can you be little clear....
no network or no data (internet) on your current network
1: do you have a locked phone or unlocked. [carrier locked when new]
2: no network will be no signals at all, no phone call....
3: no data will be you cant browse, send receve emails
4: counter can be fixed easy as now your on ics
Hi,
I got the same problem but different scenario
atifsh said:
can you be little clear....
no network or no data (internet) on your current network
1: do you have a locked phone or unlocked. [carrier locked when new]
2: no network will be no signals at all, no phone call....
3: no data will be you cant browse, send receve emails
4: counter can be fixed easy as now your on ics
Click to expand...
Click to collapse
1. my phone is unlocked(international).
2. signal show full, but no phone call
3. I don't use data, but wifi, and no problem with wifi.
Well, this : not registered on network only happen if phone idle for more than 3hrs, meaning phone just work normally if I don't let it idle for long time. This very frustrating as every morning after wake up I have to switch between airplane mode for phone working again.
Greatly appreciated for your help
Thanks in advance
P/s: currently on Slim rom(cm9). But have tried almost all custom rom found in xda, problem still exist. Even try to change CSC to my current country( Thailand) on stock DL7( included Thailand region), no luck. APN setting also change to default network provider.
Mobile network problem
Hi.
Please see my answers below
1: do you have a locked phone or unlocked. [carrier locked when new]
The phone worked before, and was not locked, but as I send a command to the phone, could I have locked it ? How can I check that ? And it does not give me any warning when I start the phone up.
When I try to make a call, it right away says: Dialling ...Call ended.
2: no network will be no signals at all, no phone call....
No mobile network. It is ONLY a problem with phone calls and reciving calls.
I have plenty of signal
3: no data will be you cant browse, send receve emails
Data is right now not working, WiFi works.
I cant get correct APN settings, as my provider sends this as system configuration to the phone, but cant recive it.
3A: My provided is named 3 Oister, and normally this provider is listed under Network operators. On this phone it is NOT listed. 3 Oister is using network of 3, and only network of 3 is listed.
If I pull down the menu from the topbar on the phone, it actually says 3 Oister, but 3 Oister is not listed under Network Operators.
On my other SG2, 3 Oister is listed in Topbar and under Network Operators.
I bought a new SG2 as well, and we are 2 persons using SG2 here.
4: counter can be fixed easy as now your on ics
How ? Can I do that without rooting and install different firmware ?
I do run ICS ver 4.03, updated by Kies.
In worst case, I will send the phone in for repair, but for sure, needs the counter reset.
Regards
Morten
Put a new firmware in the phone then probably wrong modem and CSC for your location .
Chinese sim unlikely to work 4000 miles away but that is easy to swap sim .
Rom counter for ICS use the search tool for the relevant post .
jje
Mobile network problem
Hi
Please find answers below:
Put a new firmware in the phone then probably wrong modem and CSC for your location .
As my counter says 10, you can see, I have tried this several times, and its also written in my first post.
Please send the code for check of CSC and changing CSC. As I remember it is set to be NEE.
Chinese sim unlikely to work 4000 miles away but that is easy to swap sim .
Chinese SIM works all over the world, as long as Roaming is allowed. And it works in the other phone. Now I have the Denmark SIM in, and same problem. Yes, I did close down the phone, changed SIM and started the phone again. Exactly SAME problem.
Rom counter for ICS use the search tool for the relevant post .
Would be nice to have the info written here instead.
regards
Morten
SG2Denmark said:
Hi
Please find answers below:
Put a new firmware in the phone then probably wrong modem and CSC for your location .
As my counter says 10, you can see, I have tried this several times, and its also written in my first post.
Please send the code for check of CSC and changing CSC. As I remember it is set to be NEE.
Chinese sim unlikely to work 4000 miles away but that is easy to swap sim .
Chinese SIM works all over the world, as long as Roaming is allowed. And it works in the other phone. Now I have the Denmark SIM in, and same problem. Yes, I did close down the phone, changed SIM and started the phone again. Exactly SAME problem.
Sim CSC Modem . Firmware .
Then your answer is hardware fault if above are ruled out as not a problem.
Rom counter for ICS use the search tool for the relevant post .
Would be nice to have the info written here instead.
Sorry i refuse point blank to search for someone else .
Neither do i have the relevant post bookmarked otherwise it would have been posted .
jje
Click to expand...
Click to collapse
SG2Denmark said:
Hi.
Please see my answers below
Regards
Morten
Click to expand...
Click to collapse
try this before you send for repair.......
get this stock for your network
http://www.hotfile.com/dl/149692036/21dfd27/I9100XXLPQ_I9100HTDLP3_HTD.zip.html
1: forget all your idea's do exact as i say
2: remove your sdcard
3: using cwm format system, cache, data, sdcard [system is a must]
4: remove battery / insert back goto download mode
5: flash the ROM you downloded using odin, after restart dont do any restores
6: wait for few minutes now dial this *2767*3855# [important]
dont restore any backups including titanium stuff.
if your phone works now put your sdcard back and do whatever now you want.
---------- Post added at 04:29 PM ---------- Previous post was at 04:24 PM ----------
Saisuay said:
Hi,
I got the same problem but different scenario
1. my phone is unlocked(international).
2. signal show full, but no phone call
3. I don't use data, but wifi, and no problem with wifi.
Well, this : not registered on network only happen if phone idle for more than 3hrs, meaning phone just work normally if I don't let it idle for long time. This very frustrating as every morning after wake up I have to switch between airplane mode for phone working again.
Greatly appreciated for your help
Thanks in advance
P/s: currently on Slim rom(cm9). But have tried almost all custom rom found in xda, problem still exist. Even try to change CSC to my current country( Thailand) on stock DL7( included Thailand region), no luck. APN setting also change to default network provider.
Click to expand...
Click to collapse
next time start your own thread........ this time im helping
do as i posted for the OP but instead of his firmware download your country specific firmware.
seems as a modem issue but can be sim related.
Mobile network problem
Hi again
Followed the guide very detailed
3: using cwm format system, cache, data, sdcard [system is a must]
Wiped all data in System and also Wiped Cache, using:
Root the Samsung Galaxy S2 GT-I9100 running XXLPQ firmware and install ClockworkMod Recovery: CF-Root-SGS2_XX_XEO_LPQ-v5.3-CWM5.tar
Done with Super User Granted.
4: remove battery / insert back goto download mode
Done
5: flash the ROM you downloded using odin, after restart dont do any restores
Flashed with Odin 1.85 in PDA: I9100XXLPQ_I9100HTDLP3_I9100NELP2_HOME.tar.md5
6: wait for few minutes now dial this *2767*3855# [important]
Done. Phone shows Factory Reset in big letters
dont restore any backups including titanium stuff.
Nothing restored.
Booted up, and automatic installed APK's
Same problem.
Only difference is that now the counter says 11 counts
But thanks for a detailed and well told possibility.
As I see it, the problem is connected to the standard the phone connects to the Mobile grid. As I told earlier, I made a stupid thing. I send a command with *#xxxx* in the phone, and I cant remember what code, and I did not save the page on the internet. I really think the problem is about a standard. That the phone is setup to a standard that the 3G net is not using in Denmark.
I can dump logs etc, if anyone can help. But I need to know how.
Regards
Morten
buddy your problem was.... network right? is it working now?
forget counter it will be fixed....later using triangle away with ics bootloader
---------- Post added at 12:06 AM ---------- Previous post was at 12:01 AM ----------
if your phone now works fine with calls send and recieve, manually add the apn to get 3G.
Mobile network problem
Hi
Nope. Did not solve the problem.
Just ran Triangle away, and moved the Firmware: I9100XXLPQ_I9100HTDLP3_I9100NELP2_HOME.tar.md5 to the SD card.
Will try now to install it by CWM
And then I give up. Will try to send it for repair ..... really a shame, as I really would have liked to solve it here
Cheers
Morten
Mobile network problem
Hi Buddy
It finds a lot of Networks, but cant connect to any of them
3 networks with 3G and 4 with 2 G
But not the Mobile network I need to connect to> Oister 3
My other SG2 finds that network without any problem
Cheers
Morten
I had the same problem too. At first I tought it was a rom issue, but it wasn't actually. I turned my phone off and removed and placed back my sim card and it worked.
Mobile network problem
Finished programming original firmware using CMW as source for Odin, after counter was reset to 0, and the pnone status is the same as before, but counter is 0.
So will try to send it in for repair.
Thanks to u all.
And SIM card has been removed several times, even tried with a different.
No luck at all
Cheers, and thanks again
Morten
Did you ever get to the bottom of this?
I've been using my phone in Brazil and now i'm in the UK, it's doing exactly as you describe.
...
How would you go about checking these?
Escy said:
How would you go about checking these?
Click to expand...
Click to collapse
Compare the IMEI that displays when you type *#06# to the IMEI printed on the label under your battery. They should be the same.
For your own sake, do NOT post what the IMEI under the battery actually is, whether it's the same as what's displayed when you dial *#06# or not.
As for checking IMEI blocking by the carrier, that should be obvious. Call your carrier.

Not registered on network, again

This thread is outdated and not related to the new problem with EFS coruption. Solutions proposed here wont help you if you lost your network after downgrading a ROM from MF6 to earlier.
Ok it's not the first thread about this but no one seems to have an answer. I'm trying again.
I flashed a custom ROM on a friend's phone i9300. After the flash the phone keep saying "Not registered on network". I tried everything I know.
I changed modem
I changed ROM (3X) (with full wipe)
I returned to stock
I installed GetRil (changed the baseband)
I installed Galaxsim (phone already unlock)
when I try to set the APN I get a message "registered on network" but when I do a phone call I got "Not registered on network"
Is there anyone who knows any way to solve this problem?
New sim? What all works?
Kremata said:
Ok it's not the first thread about this but no one seems to have an answer. I'm trying again.
I flashed a custom ROM on a friend's phone i9300. After the flash the phone keep saying "Not registered on network". I tried everything I know.
I changed modem
I changed ROM (3X) (with full wipe)
I returned to stock
I installed GetRil (changed the baseband)
I installed Galaxsim (phone already unlock)
when I try to set the APN I get a message "registered on network" but when I do a phone call I got "Not registered on network"
Is there anyone who knows any way to solve this problem?
Click to expand...
Click to collapse
omg thanks for creating this thread, I had no time to do it I HAVE THE EXACT PROBLEM
I wanted to install Cyanogenmod android 4.2.2 BUT SINCE IM A NOOB NO ONE WARNED ME THAT I HAD TO DO A EFS BACKUP OR whatever is called, thing is my IMEI is ****ed up, and it does says Not registered on network with my Sim card on it, it's Brand new sim card i tested it on another Smartphone and it Works GOOD, I tried like crazy looking up on the internet so many ways to fix it but the only way apparently it's using a software called octopus and a hardware wich costs a bunch of $ therefore im sure there must be a way to save that money .
i did Factory reset, tried another stock rom 4.1.2
tried airplane mode turning on and off, tried looking for networks automatically, and nothing it just says not registered on network, please help, my imei IS not barred i also am against robbery here.
please help
... Please
b-eock said:
New sim? What all works?
Click to expand...
Click to collapse
everything works fine on the phone except the call/ 3g. She came with her own Sim card but she left me the phone and I'm using my own Sim card and same result.
Now I see that the IMEI SV is 01, My phone Number is UNKNOWN( is it normal?)
Kremata said:
everything works fine on the phone except the call/ 3g. She came with her own Sim card but she left me the phone and I'm using my own Sim card and same result.
Now I see that the IMEI SV is 01, My phone Number is UNKNOWN( is it normal?)
Click to expand...
Click to collapse
yep at the end of mine says 01 aswell
Get a new sim from your carrier. Either your sim tray is broken or your sim card is. Sim card is cheap/free to replace so try that first.
b-eock said:
Get a new sim from your carrier. Either your sim tray is broken or your sim card is. Sim card is cheap/free to replace so try that first.
Click to expand...
Click to collapse
nope that doesn't work the problema is in the Smartphone imei i think some kind of bug,
zomgiloveyou said:
omg thanks for creating this thread, I had no time to do it I HAVE THE EXACT PROBLEM
I wanted to install Cyanogenmod android 4.2.2 BUT SINCE IM A NOOB NO ONE WARNED ME THAT I HAD TO DO A EFS BACKUP OR whatever is called, thing is my IMEI is ****ed up, and it does says Not registered on network with my Sim card on it, it's Brand new sim card i tested it on another Smartphone and it Works GOOD, I tried like crazy looking up on the internet so many ways to fix it but the only way apparently it's using a software called octopus and a hardware wich costs a bunch of $ therefore im sure there must be a way to save that money .
i did Factory reset, tried another stock rom 4.1.2
tried airplane mode turning on and off, tried looking for networks automatically, and nothing it just says not registered on network, please help, my imei IS not barred i also am against robbery here.
please help
... Please
Click to expand...
Click to collapse
Kremata said:
Ok it's not the first thread about this but no one seems to have an answer. I'm trying again.
I flashed a custom ROM on a friend's phone i9300. After the flash the phone keep saying "Not registered on network". I tried everything I know.
I changed modem
I changed ROM (3X) (with full wipe)
I returned to stock
I installed GetRil (changed the baseband)
I installed Galaxsim (phone already unlock)
when I try to set the APN I get a message "registered on network" but when I do a phone call I got "Not registered on network"
Is there anyone who knows any way to solve this problem?
Click to expand...
Click to collapse
sounds like (both of you) your EFS folder is corrupt - the only way i've read of repairing it is to have a back up. service center for repair is the only option AFAIK.
The IMEISV means nothing, don't even worry about it. Know what you're talking about before you blurt out crap.
b-eock said:
The IMEISV means nothing, don't even worry about it. Know what you're talking about before you blurt out crap.
Click to expand...
Click to collapse
mwahahahah "blurt out crap" PMSL :laugh:
Hehe hehe... hehehehe... fk u..
Hehehehe!
“BUT SINCE IM A NOOB NO ONE WARNED ME THAT I HAD TO DO A EFS BACKUP“
No one should have to warn you! Do some reading first! Fk your imei!
b-eock said:
Get a new sim from your carrier. Either your sim tray is broken or your sim card is. Sim card is cheap/free to replace so try that first.
Click to expand...
Click to collapse
Like I said I've use my friend SIM and my SIM both makes no difference on the phone. Maybe it's the tray
Kremata said:
Like I said I've use my friend SIM and my SIM both makes no difference on the phone. Maybe it's the tray
Click to expand...
Click to collapse
Usual suspects .
Sim you tried another .
Sim carrier unusual to be damaged .
IMEI wrong .
No phone number details standard with many roms .
Network details not entered or incorrect or wrong CSC .
Wrong modem unlikely .
Best to restore phone to original firmware .
http://forum.xda-developers.com/showthread.php?t=1978840
Return to service .
JJEgan said:
Usual suspects .
Sim you tried another .
Sim carrier unusual to be damaged .
IMEI wrong .
No phone number details standard with many roms .
Network details not entered or incorrect or wrong CSC .
Wrong modem unlikely .
Best to restore phone to original firmware .
http://forum.xda-developers.com/showthread.php?t=1978840
Return to service .
Click to expand...
Click to collapse
First I restored the phone with the nandroid backup I made just before flashing. (still not register on network)
Then I restored the phone to stock Samsung with Odin (still not register on network)
The IMEI is still there(most thread I read with this problem people lost their IMEI)
The phone can connect to the network because it can retreive the time from the network.
If I make a network operator search it finds China Unicom(This is my sim card) and when I choose it it says "register on the network" but as soon as I try to call, I get the "not register on network" again.
I thought the IMEI might be block as it might be a stolen phone but I made a search on two IMEI database and it says CLEAR.
I flashed 3 Asian modems( I used to have a S3 I know the XXELJ2 was working with my sim card) and same result.
Have you tried flashing a different modem to your device and reporting the problem to your provider.
May sound obvious but the provider's logs may clearly show what is wrong and they can report it back to you.
Sent from my GT-I9300 using xda premium
JJEgan said:
Usual suspects .
Sim you tried another .
Sim carrier unusual to be damaged .
IMEI wrong .
No phone number details standard with many roms .
Network details not entered or incorrect or wrong CSC .
Wrong modem unlikely .
Best to restore phone to original firmware .
http://forum.xda-developers.com/showthread.php?t=1978840
Return to service .
Click to expand...
Click to collapse
OMG you remind me of ABATURR IN STARCRAFT 2 HoTS
hahaha cool
---------- Post added at 10:47 AM ---------- Previous post was at 10:06 AM ----------
zomgiloveyou said:
OMG you remind me of ABATURR IN STARCRAFT 2 HoTS
hahaha cool
Click to expand...
Click to collapse
anyway, tried this metod too now, and still the same ~
Hey guys, had a very similar problem to kremata (everything in EFS folder seemingly ok (IMEI and S/N were fine)), and for me it got fixed by applying Azira's Patch ( http://forum.xda-developers.com/showthread.php?t=1918601 ).
However this solution only works by rooting and if you try to return it to stock it will reverse to being a 500$ PDA sadly.
In any case, the phone is now fully functional (calling/SMS/mobile data).
hey
i can fix ur problem
djhiti said:
i can fix ur problem
Click to expand...
Click to collapse
ok

Unable to Register On network

Hi this is starting to really bug me now Im unable to register on a network I get signal bars but only get emergency calls only tried dfferent sim cards and reverted back to latest official stock to no avail any suggestions please
As per multiple identical posts .
First is your IMEI correct
Are your mobile network settings correct
sim card correct and tested
correct modem and csc.
jje
Check your IMEI number. Sometimes, when we flash custom ROM, the phone looses its IMEI number. If it's true, you must use an EFS backup to restore it.
Second solution : your mobile phone was blacklisted (if it was considered as stollen).
Network
Hi thanks for the reply I have been searching I've checked my imei in status and it matches details under battery compartment i'm still paying for the phone (pay weekly) so no reason it would be blacklisted ok just tried another different sim card on Vodafone official s3 stock rom and it registered hmmm im on talktalk which uses voda I know this sim works but i'll get them to send me a new one thanks for your time guys

Unlocked i527, IMEI Unknown? How Do I Recover?

I recently rooted my i527 then unlocked it for use on T-Mobile, And it was working just fine, Getting Signal and EDGE, So earlier this morning I took out my sim card and rebooted the phone a few times, Changing the APN from epc.tmobile.com to fast.tmobile.com thinking that was going to get me from going from EDGE to 4G or LTE... Yeah Right! Little did I know, It requires a lot more than just changing the APN.. But thats beside the point.
Anyway, While I was taking my sim out and rebooting, After once or twice of doing this, The phone would not come up with T-Mobile signal AT ALL. After a while of just blankness it would pick up What Im guessing is WCDMA signal or something, But not T-Mobile Active signal like it was doing just fine before. So after 20 or so reboots (thinking that was the problem), And looking around, I noticed that the phone is not issuing a IMEI number. Not in settings, and not *#06# either. The IMEI number has been lost. When I go to settings to view it in About Device it just says "Unknown". I'm assuming this is my problem, Once I get the phones IMEI number back, It will pick up T-Mobile signal again.
At the beginning of this, I was simply trying to get high speed data on the device.. Now I can't even make and receive phone calls. :crying: Any help on how to recover the IMEI would be great, and highly appreciated.
Thanks
Araltd said:
I recently rooted my i527 then unlocked it for use on T-Mobile, And it was working just fine, Getting Signal and EDGE, So earlier this morning I took out my sim card and rebooted the phone a few times, Changing the APN from epc.tmobile.com to fast.tmobile.com thinking that was going to get me from going from EDGE to 4G or LTE... Yeah Right! Little did I know, It requires a lot more than just changing the APN.. But thats beside the point.
Anyway, While I was taking my sim out and rebooting, After once or twice of doing this, The phone would not come up with T-Mobile signal AT ALL. After a while of just blankness it would pick up What Im guessing is WCDMA signal or something, But not T-Mobile Active signal like it was doing just fine before. So after 20 or so reboots (thinking that was the problem), And looking around, I noticed that the phone is not issuing a IMEI number. Not in settings, and not *#06# either. The IMEI number has been lost. When I go to settings to view it in About Device it just says "Unknown". I'm assuming this is my problem, Once I get the phones IMEI number back, It will pick up T-Mobile signal again.
At the beginning of this, I was simply trying to get high speed data on the device.. Now I can't even make and receive phone calls. :crying: Any help on how to recover the IMEI would be great, and highly appreciated.
Thanks
Click to expand...
Click to collapse
If you still have the unlock code try reseting the phone using kies... then see if your imei comes back..
Used ODIN to install correct ROM. This might help.
Get your officla ROM from http://www.sammobile.com/
azpatterson3 said:
SamMobile still doesn't have AT&T sgh-i527 firmware. Use kies to recover your phone or odin with the posted firmware on this forum. Kies would be the safest.
Sent from my SAMSUNG-SGH-I317 using xda app-developers app
Click to expand...
Click to collapse
Sent from my SAMSUNG-SGH-I317 using xda app-developers app
please let us know if you can get it to work and how you did it.
Used wanam xposed for [email protected] .
Sent from my GT-I9205 using Tapatalk
I tried to flash using the bootloader option in ODIN with the MD5 File from this thread http://forum.xda-developers.com/showthread.php?t=2558602 in which the flash was successful, HOWEVER No IMEI Recovery.. The baseband and build number changed but the IMEI still says Unknown.
Does any one have any solution? Any idea on how to recover the IMEI?
Thanks
Araltd said:
I tried to flash using the bootloader option in ODIN with the MD5 File from this thread http://forum.xda-developers.com/showthread.php?t=2558602 in which the flash was successful, HOWEVER No IMEI Recovery.. The baseband and build number changed but the IMEI still says Unknown.
Does any one have any solution? Any idea on how to recover the IMEI?
Thanks
Click to expand...
Click to collapse
Try flashing the modem for your phone.
use odin
Araltd said:
I tried to flash using the bootloader option in ODIN with the MD5 File from this thread http://forum.xda-developers.com/showthread.php?t=2558602 in which the flash was successful, HOWEVER No IMEI Recovery.. The baseband and build number changed but the IMEI still says Unknown.
Does any one have any solution? Any idea on how to recover the IMEI?
Thanks
Click to expand...
Click to collapse
You will need Microsoft .NET Framework v4.0 installed on your computer Use efs professional on your computer found here http://forum.xda-developers.com/showthread.php?t=1308546
make sure you have root and install busybox on phone. run the EFS Professional exe file from the downloaded file from link i posted there will be a pop up window with three options pick the efs professional tab give it time to connect you will need to give permission on phone for adb if all done right it will say ready on program. across top of the program there will be four tabs click the qualcomm tab now there will be more options click on qualcomm nv tools tab let it connect. now there will be a new window for qualcomm nv tools hit the connect button now you will see your imei at bottom if your imei is not there put it in imei box and then click the write tab. hope this helps.

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